CN211595709U - Insert pipe connecting piece - Google Patents

Abstract

The utility model provides an insert tube connecting piece, which consists of a base, a connecting piece body and a casting material; the connecting piece body is a metal cylinder with an upper opening, a rectangular cross section and circular arcs on two sides, pouring materials are filled in the connecting piece body, and a base is welded at the lower end of the connecting piece body. The utility model discloses can eliminate the gunning dead angle, reduce because of the junction falls the lower coil frequency that the material caused, improve the insert tube life-span, reduction in production cost.

Description

An insertion tube connector

technical field

The utility model belongs to the field of refining equipment, in particular to an insertion pipe connector for RH refining.

Background technique

The RH refining furnace is the equipment for realizing the refining process outside the furnace. It can blow oxygen to heat up, and has the functions of decarburization and dehydrogenation to adjust the temperature of molten steel components, and to produce high-value-added high-quality steel grades such as silicon steel and automobile sheets.

The insertion tube is a key part of the RH vacuum chamber, which is divided into an ascending pipe and a descending pipe. When the molten steel is processed, the ascending pipe is filled with argon gas, and the density of bubbles in the molten steel decreases. The rising pipe enters the vacuum chamber, and under the action of gravity, the molten steel flows back to the large tank through the descending pipe to realize the circulation of molten steel and process the molten steel.

Due to the process of processing molten steel, the insertion tube should be inserted into the molten steel. Under the scouring of the circulating molten steel, the insertion tube will have castable cracks, spalling, serious erosion, etc., and should be sprayed after 3 to 4 tanks are processed. Maintenance, in which the gap between the rising pipe and the descending pipe is the weak link of gunning. The erosion is serious here. Due to the narrow gap, the gunning effect here is not good. It not only affects the treatment of molten steel, but also reduces the service life of the insertion tube and increases the cost.

SUMMARY OF THE INVENTION

The utility model provides an inserting pipe connecting piece which can eliminate the dead angle of spraying, reduce the frequency of down-line caused by material drop at the connection, improve the service life of the inserting pipe and reduce the cost.

For this reason, the technical solution adopted by the present utility model is:

An insertion pipe connector is composed of a base, a connector body and a castable; the connector body is a metal cylinder with an open top, a rectangular cross section and arcs on both sides, and the connector body is filled with castables , the lower end of the connector body is welded to the base.

The arc radii on both sides of the metal cylinder of the connector body are correspondingly selected according to the outer radius of the connected insertion tube.

The beneficial effects of the present utility model are:

By adopting the inserting pipe connecting piece of the utility model, the dead angle of spraying and filling is eliminated, the frequency of downline caused by the material dropping at the connection is reduced, and the service life of the insertion pipe is improved. For the revised one, the number of times was reduced by 48 throughout the year; the frequency of offline due to material drop at the connection was reduced by 80%, and the number of times the insertion tube was used was increased by 3 times, thus greatly reducing the production cost.

Description of drawings

Figure 1 is a front cross-sectional view of an insertion tube connector;

Figure 2 is a top view of the insertion tube connector.

In the figure: base 1, connector body 2, castable 3.

Detailed ways

As can be seen from Figures 1-2, the inserting pipe connector of the present invention is composed of a base 1, a connector body 2, and a casting material 3. The connector body 2 is a metal cylinder with an open top, a rectangular cross-section, and arcs on both sides. The radii of the arcs on both sides of the metal cylinder of the connector body 2 are selected according to the outer radius of the connected insertion tube, that is, the design and manufacture are based on the outer radius of the connected rising pipe and the descending pipe, so as to ensure the connection is appropriate and tight.

The connector body 2 is made of a 2mm iron plate, and is made of an iron cylinder with a height of 500mm, a width of 300mm, and a length of 400mm, with arcs on both sides. The base 1 is made of an iron plate with a thickness of 3mm, a length of 550mm and a width of 450mm.

The connector body 2 is installed between the two insertion tubes, the base 1 and the connector body 2 are welded together, and the castable 3 is loaded from the opening. After drying for 12 hours, it can be used online for baking.

Claims (2)

1. An insertion pipe connector, characterized in that it is composed of a base, a connector body and a casting material; the connector body is a metal cylinder with an open top, a rectangular cross-section and arcs on both sides, and the connector body is a metal cylinder with an arc on both sides. The body is filled with casting material, and the lower end of the connector body is welded with a base. 2 . The insertion tube connector according to claim 1 , wherein the arc radii on both sides of the metal cylinder of the connector body are correspondingly selected according to the outer radius of the connected insertion tube. 3 .

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